Quayle, H.J. 1911e Scale insect parasitism in California.. Journal of Economic Entomology 5: 510-515.

Notes: Scales discussed include Aspidiotus perniciosus, Chrysomphalus aurantii, C. aurantii var. citrinus, Coccus hesperidum, Icerya purchasi, Lecanium corni, Lepidosaphes beckii and Saissetia oleae.